md-notion-sync

A TypeScript/Node.js package to sync markdown files to Notion pages with proper formatting support.

Features

• ✅ Rich Formatting: Supports headers, bold, italic, code blocks, lists, tables, quotes, and links
• 🧹 Smart Link Filtering: Automatically filters out relative links, anchor links, and images
• 🔄 Batch Processing: Handles large documents with efficient batch uploads
• 🎯 Type Safety: Built with TypeScript for better development experience
• 📦 Multiple Interfaces: Use as CLI tool, programmatic API, or GitHub Action
• 🚀 Easy Setup: Simple configuration with environment variables

Installation

npm install md-notion-sync

For global CLI usage:

npm install -g md-notion-sync

Quick Start

CLI Usage

1. Initialize configuration:

md-notion-sync init

2. Edit the generated .env file with your Notion token:

NOTION_TOKEN=your_notion_integration_token_here

3. Sync a markdown file:

md-notion-sync sync -f README.md -p your_notion_page_id

Programmatic Usage

import { syncMarkdownToNotion } from 'md-notion-sync';

await syncMarkdownToNotion({
  notionToken: 'your_notion_token',
  pageId: 'your_page_id', 
  filePath: './README.md',
  clearExisting: true // optional, defaults to true
});

Advanced Usage

import { NotionSync, MarkdownToNotion } from 'md-notion-sync';

// Create converter and sync instances
const converter = new MarkdownToNotion();
const sync = new NotionSync('your_token');

// Convert markdown to Notion blocks
const blocks = converter.convert(markdownContent);

// Add to Notion page
await sync.addBlocksToPage('page_id', blocks);

GitHub Action Usage

Create .github/workflows/sync-readme.yml:

name: Sync README to Notion
on:
  push:
    paths: ['README.md']

jobs:
  sync:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      
      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version: '18'
      
      - name: Install package
        run: npm install -g md-notion-sync
      
      - name: Sync to Notion
        run: md-notion-sync sync -f README.md -p ${{ secrets.NOTION_PAGE_ID }}
        env:
          NOTION_TOKEN: ${{ secrets.NOTION_TOKEN }}

Configuration

Environment Variables

• NOTION_TOKEN: Your Notion integration token (required)
• NOTION_PAGE_ID: Default page ID to sync to (optional)

CLI Options

md-notion-sync sync [options]

Options:
  -f, --file <path>     Path to markdown file (required)
  -p, --page-id <id>    Notion page ID (required)
  -t, --token <token>   Notion API token (or use NOTION_TOKEN env var)
  --no-clear            Don't clear existing content before syncing
  -h, --help            Display help for command

Supported Markdown Features

| Feature | Support | Notes | |---------|---------|-------| | Headers (H1-H3) | ✅ | Converted to Notion heading blocks | | Bold text | ✅ | Rich text formatting | | Italic text | ✅ | Rich text formatting | | Inline code | ✅ | Rich text formatting | | Code blocks | ✅ | With language syntax highlighting | | Lists (ordered/unordered) | ✅ | Nested lists supported | | Tables | ✅ | With headers and formatting | | > Blockquotes | ✅ | Converted to quote blocks | | Links | ✅ | External links only | | Images | ❌ | Filtered out (not supported by Notion API) | | Horizontal rules | ✅ | Converted to divider blocks |

Getting Your Notion Token

1. Go to Notion Developers
2. Click "Create new integration"
3. Give it a name and select your workspace
4. Copy the "Internal Integration Token"
5. Share your target page with the integration

Getting a Notion Page ID

The page ID is the string of characters after your workspace name and before any query parameters:

https://www.notion.so/workspace/Page-Title-HERE_IS_THE_PAGE_ID

API Reference

syncMarkdownToNotion(options)

Main sync function.

Parameters:

• options.notionToken (string): Notion API token
• options.pageId (string): Target Notion page ID
• options.filePath (string): Path to markdown file
• options.clearExisting (boolean, optional): Clear existing content first (default: true)

MarkdownToNotion

Converter class for transforming markdown to Notion blocks.

Methods:

• convert(markdown: string): NotionBlock[] - Convert markdown string to Notion blocks

NotionSync

Notion API wrapper class.

Methods:

• clearPageContent(pageId: string): Promise<void> - Clear all blocks from a page
• addBlocksToPage(pageId: string, blocks: NotionBlock[]): Promise<void> - Add blocks to a page
• syncMarkdownToNotion(options: SyncOptions): Promise<void> - Full sync operation

Error Handling

The package includes comprehensive error handling for:

• Invalid Notion tokens
• Missing or inaccessible files
• Network failures
• Notion API rate limits
• Invalid page IDs